✉news WorldWorld first seen 6 h ago, last 2 h ago, peak #9
Polar vortex returns: what it means for winter
Original: The polar vortex is returning. What's its role for winter?
Meteorologists are watching the polar vortex as it returns, raising questions about its influence on the coming winter season. The vortex, a large mass of cold, spinning air over the Arctic, can weaken or shift and push frigid air into mid-latitudes. Its strength and stability in the months ahead are seen as key factors shaping winter weather forecasts across North America, Europe and Asia.
Why now: It is seasonal forecasting news at the start of winter, when cold-weather outlooks draw wide public interest.
Rank over time, top of the chart is #1. 3 snapshots from 5 h ago to 2 h ago.
Evidence
- The polar vortex is returning. What's its role for winter? · news8000.com
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